diff --git a/setup.py b/setup.py
index 4be2ba0..b2a9ee8 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 DOWNLOAD_URL = 'https://github.com/thomasvrussell/sfft'
 
 LICENSE = 'MIT Licence'
-VERSION = '1.3.3beta'
+VERSION = '1.3.3'
 
 install_reqs = ['scipy>=1.5.2',
                 'astropy>=3.2.3',
diff --git a/test/difference_noise_decorrelation/decorr.py b/test/difference_noise_decorrelation/decorr.py
index 1226f24..6854800 100644
--- a/test/difference_noise_decorrelation/decorr.py
+++ b/test/difference_noise_decorrelation/decorr.py
@@ -6,6 +6,7 @@
 from sfft.utils.SkyLevelEstimator import SkyLevel_Estimator
 from sfft.utils.DeCorrelationCalculator import DeCorrelation_Calculator
 CDIR = pa.dirname(pa.abspath(__file__))
+# sfft version: 1.3.2+
 
 # ** Science Group
 FITS_04a = CDIR + '/input_data/DEC-OBS04a.mini.fits'
diff --git a/test/subtract_test_crowded_flavor/subtract4crowded.py b/test/subtract_test_crowded_flavor/subtract4crowded.py
index c30df4c..6618d1a 100644
--- a/test/subtract_test_crowded_flavor/subtract4crowded.py
+++ b/test/subtract_test_crowded_flavor/subtract4crowded.py
@@ -1,5 +1,6 @@
 import os.path as pa
 from sfft.EasyCrowdedPacket import Easy_CrowdedPacket
+# sfft version: 1.3.2+
 
 # configuration: computing backend and resourse 
 BACKEND_4SUBTRACT = 'Cupy'      # FIXME {'Pycuda', 'Cupy', 'Numpy'}, Use 'Numpy' if you only have CPUs
diff --git a/test/subtract_test_customized/subtract4customized.py b/test/subtract_test_customized/subtract4customized.py
index 61fdd39..c54a371 100644
--- a/test/subtract_test_customized/subtract4customized.py
+++ b/test/subtract_test_customized/subtract4customized.py
@@ -6,6 +6,7 @@
 from tempfile import mkdtemp
 from sfft.CustomizedPacket import Customized_Packet
 CDIR = pa.dirname(pa.abspath(__file__))
+# sfft version: 1.3.2+
 
 # configuration: computing backend and resourse
 BACKEND_4SUBTRACT = 'Cupy'      # FIXME {'Pycuda', 'Cupy', 'Numpy'}, Use Numpy if you only have CPUs
diff --git a/test/subtract_test_multiprocessing/multiple_subtract_crowded_flavor.py b/test/subtract_test_multiprocessing/multiple_subtract_crowded_flavor.py
index 8d69e4e..23e79bc 100644
--- a/test/subtract_test_multiprocessing/multiple_subtract_crowded_flavor.py
+++ b/test/subtract_test_multiprocessing/multiple_subtract_crowded_flavor.py
@@ -4,6 +4,7 @@
 import os.path as pa
 from sfft.MultiEasyCrowdedPacket import MultiEasy_CrowdedPacket
 CDIR = pa.dirname(pa.abspath(__file__))
+# sfft version: 1.3.2+
 
 # configuration: multiprocessing and computing resourse
 NUM_THREADS_4PREPROC = 16          # FIXME Python threads for preprocesing
diff --git a/test/subtract_test_multiprocessing/multiple_subtract_sparse_flavor.py b/test/subtract_test_multiprocessing/multiple_subtract_sparse_flavor.py
index 427ef52..a9508be 100644
--- a/test/subtract_test_multiprocessing/multiple_subtract_sparse_flavor.py
+++ b/test/subtract_test_multiprocessing/multiple_subtract_sparse_flavor.py
@@ -4,6 +4,7 @@
 import os.path as pa
 from sfft.MultiEasySparsePacket import MultiEasy_SparsePacket
 CDIR = pa.dirname(pa.abspath(__file__))
+# sfft version: 1.3.2+
 
 # configuration: multiprocessing and computing resourse
 NUM_THREADS_4PREPROC = 16          # FIXME Python threads for preprocesing
diff --git a/test/subtract_test_sparse_flavor/subtract4sparse.py b/test/subtract_test_sparse_flavor/subtract4sparse.py
index 26b63e5..fe9f932 100644
--- a/test/subtract_test_sparse_flavor/subtract4sparse.py
+++ b/test/subtract_test_sparse_flavor/subtract4sparse.py
@@ -1,5 +1,6 @@
 import os.path as pa
 from sfft.EasySparsePacket import Easy_SparsePacket
+# sfft version: 1.3.2+
 
 # configuration: computing backend and resourse
 BACKEND_4SUBTRACT = 'Cupy'      # FIXME {'Pycuda', 'Cupy', 'Numpy'}, Use Numpy if you only have CPUs